Fireproof window construction.



J. G. BRAUN.

FIRBPBOOF WINDOW CONSTRUCTION. ArrLIoA'rIox num ssr'r. ao, wos.

Patented Sept. 26, 1911.

2 SHEETS-SHEET 1.

, J. G. BRAUN. rmrnoor wmnow ooNsTnUoTIoN.

APPLICATION FILED BBYT. 80h19.

' Patented Sept. 26,1911.

2 SHEETS-SHEET 2.

Jaw/'112672' Jaoo 6. razm vao JACOB G. BRAUN, OF CHICAGO,- ILLINOIS.

Frmirnoor WINDOW coNs'rnUcrroN.

Specication of Letters Patent. ,Pa/tented Sept, 26,1911,

Application led September 30,1909. Serial No. 520,315.

To all it 'may concern: l

Be it known that I, JACOB G. BRAUN, a citizen of the United States, residing at Chicago, in thev county of Cook and State of Illinois, have invented certain new and useful Improvements in Firep-roof Vindow Construction, of which the followingis a specification.

This invention relates to lire proof window construction and has for, its main general object to provide an improved construction, combination and arrangement of parts comprising the window frame and sashes.

One of the objects ofy this invention is to provide improved fire proof connections bctween the window sashes and frame.

Another object is to provide improved fire proof connections between the sashes when closed. l y f ,Another object is toprovide an improved integral Ametal construction for window frames and sashes which willbe fire proof.

A Other and further'objects will'appear in the' followingspecificatlon and be particularly pointed out in the appended claims, reference being had to the accompanying drawing showing one exempliication of my invention, and in which- Figure 1 is a front elevation, partly broken away,of a window` provided with my improvemenlts and showing one embodiment of the built-up structure according to my invention. Fig. 2 is a section on line 2-2 of Fig. 1. Fig. 3 isa section on the broken line 3 3 f Fig. 2. Fig. 4 is an enlarged transverse section through the side bars on one side of the sashes when the sashes are in positions overlapping each other. Fig. `5 is a detail section on an enlarged scale showing the intei-locking connection between the sashes. Fig. 6 is an enlarged elevation of one corner of the window frame and sash showing another embodiment of the built up structure employed in the manufacture of a fire-proof window construction according to my invention. Fig.`7 is'a detail sectional v1ew online 7--7 of Fig. 1.

Referring first to Fig. 1 of the drawings, a fire proof :window construction has been shown in which the uprights 1 and 2 may be "rigidly connected respectively with an upper cross member 3 and a lowerv cross member 4 in' any suitable manner but preferably such `rigid connections are provided by weldingl the abutting surfaces at the corners of the frame in such manner as to form an integral structure throughout. Within the frame are mounted an upper sash 5 and a lower sash 6, 1n any suitable manner but according to the showing made on the drawings, these sashes are slidable within suitable guides in the window frames. f Y

Referring now to Fig. 2, the upper cross to be of hollow integral structure with a channeled cross sectionfthe upper face of said member through which the channel opens outwardly beingl provided with Iianged edges 7 and 8, able means for attaching a cover plate 9 to form a closed hollow section.

cross member 4 is constructed in a somewhat similar manner with a'channeled cross section provided with outer. flanged edges 10, 11, to which is rigidly fastened a plate 12,

Seated within a recess 13 in the upper portion of said lower member'4 is a window sill 14 of peculiar construction, to be hereinafter referred to, while the upper member 3 is provided withv a depending integral rib 15. By reference to Fig. 3, the cross section of the uprights 1 and 2 will also be seen to be provided with a hollow channeled formation, each of which has flanged edges 16, 16, and'17, 17, to which are securely fastened the cover plates 18 and 19 forming closed hollow sections. Extending longitudinally of said uprights 1 and 2 are partitions 20, 21 of any suitable cross section but preferably of the channel section shown on the drawings. Said partitions are arranged midway of the width of said uprights and form boxes 22, 22, 23, 23, within which the counterbalancing weights may be suspended. Said uprights 1 and 2 upon their faces adjacent to the windows are provided with are seated structural sections 27 28 and 29 respectively to provide window guides. detail construction of these guides as well as that of the interengaging edges of the window sashes is shown most clearly in Fig. 4; The sections 27, 29, f the window guides are of suit-able cross section so that when secured inpositon on said uprights 1 and 2 grooves 3Q, 31l are formed, in whichlengage tongues32, 33, which are integral pro]ect ing portions of 'the window sash. frames of -the windows 5 and 6. It'will thus be seen that the windows are slidably mounted within the frame with tongue. and groove member of the window sash will be seen which provide suitforming a closed hollow section thereof.y

The lower longitudinal recesses 24, 25, 26 within which A 10oA connections. The inte rally constructed side rails 34, embodymg the tongues 32,2 33 just referred to are rovlded with grooves 36, 37, respectively whlch together with the groove 38 in the intermediate guide section 28 serve to provide a plurality of hollow channels along -the joint between 'the sashes and the frame.

1 'Referring now to Fig. 5, an exemplificain the manner shown in Fig. 2 t'o provide- With the rib 15 a suitable tongue and grooved joint between said upper sash and the upper cross member 3 of the window` frame. The lower cross rail 44 and the window sill 14 are respectively provided' with tongue and groove connectlons of any suitable form but preferably this tongue and groove connection between the vs1lll and lower sash isprovided by making the sill with \a plurality of upwardly projecting tongues or ribs 45 and by providingl the I lower cross rail 44 of the sash with correspending 4grooves to fit over and around said tongues. In each of the sashes 'the respective side rails and cross rails are rigidly united in any suitable manner but prefeiably by welding said sections into an integral whole. In the upper portion of Fig. l, the upper sash has been shown to comprise two panes of glass separated by the' muntin rail 46, which is 'also preferably integrally united with the upper window sash Iby welding.

By reference to Fig. 7, which-shows a crosssection on the line 7 7, Fig. l, the muntin .rail 46 will be seen to be provided with flanges 47, 48,'which ,in conjunction witlr'the detachable retaining strip 49 is adapted to form a suitable'socket tor the glass. be seen from an inspection of Fig. 3 .that the side rails of both the upper and lower sashes have also been provided with detachable inner face-of the jamb, structural sections `neled window sashes .formed with lateral projections each extendingy oppositely .intofyA It will- I' strips Ato permit replacement of the glass windows.

As shown in the upper'left hand corner "offFigL 1, the sashes may be suspended within the framein the usual manner by'cords 50 passing through the lpulley blocks 51,' said sashes being counterbalanced by means of the weights 52 suspended in the housings 22 and 23 provided 1n the uprights of theframe for that purpose.

1. In fire proof window construction, vthe combination of a hollow met-allie window frame comprising U-shapedfjambs, the legs l of the U being presented outwardly and formed with longltudinal recesses along the disposed in said recesses and secured to the j amb to -form grooves along the face of the jamb, the openingsy of vsaid grooves being oppositely dlsposed to face each other, chan- Y one of said grooves -to permlt the slidingy movement of the sash, and a channeled section seated in another of said recesse extending longitudinally between said sashes; to space them apart and to retain them in said grooves.. I l 4 2. In f i're proof windowconstruction, the'` combination of-'a hollow metallic window frame comprising 'U-shaped jambs, the legs formed with longitudinal recesses along the inner face of the jamb, Z-shaped structuralsections disposed in some ofr said recesses to form grooves along the face of the jamb opening toward each other, channeled winvdow sashes, one leg of each channeled section being disposed to enter one of said grooves, and a channeled section with one leg' disposed in a recess between'two other recesses and adapted to space tw-o, sashes apart and to'retainl them inthe said grooves.

In 'testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 27th day 100 cfSeptember, A. D. 1909.

Witnesses:

CHAB. H. SEEM,

ARTHUR O. KNIGHT.

of the U beingv presented outwardly and 'l JACOB dBR'AuN.' 

